many people are confident that 'the revealer'may reveal some

e of 指“具有...的性质”,不是任何语境都能使用这种方式
something of value 有价值的一些东西
这里与be of结构不同 ,是of引导的介词短语作后置定语,修饰something.
要去掉of的话,可以改成：
Many people are confident that the revealer may reveal something valuable fairly soon.